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List of datasets and elements available on iTacsUsers can use two types of datasets, analysis dataset and forecast one on iTacs.The analysis dataset consists of re-analysis and observational data such as the Japanese Reanalysis for Three Quarters of a Century (JRA-3Q), outgoing longwave radiation (OLR) provided by NOAA, sea surface temperature analysis (Merged satellite and in-situ data Global Daily Sea Surface Temperature: MGDSST) data, world climate data from surface observation stations (CLIMAT reports). The forecast dataset consists of JMA's one-month prediction model products and re-forecast (hind-cast) dataset.The datasets and its elements available on iTacs are listed as below. |
| Dataset | Element | Unit | |
|---|---|---|---|
| JRA-3Q | Pressure Levels | χ (Velocity potential) | 106 m2/s |
| Div (Relative divergence) | 1/s | ||
| θe (Equivalent potential temperature) | K | ||
| ω (Pressure vertical velocity) | Pa/s | ||
| ψ (Stream function) | 106 m2/s | ||
| θ (Potential temperature) | K | ||
| q (Specific humidity) | kg/kg | ||
| T (Temperature) | °C | ||
| T-Td (Dew point depression) | K | ||
| U (Zonal wind) | m/s | ||
| V (Meridional wind) | m/s | ||
| Ws (Horizonal Wind Speed) | m/s | ||
| Udiv (Zonal divergence wind) | m/s | ||
| Vdiv (Meridional divergence wind) | m/s | ||
| ζ (Relative vorticity) | 1/s | ||
| γ (Geopotential height) | gpm | ||
| EGR (Maximum growth rate in the Eady problem) | 1/day | ||
| KE (Kinetic energy of high-frequency variation) | m2/s2 | ||
| Flux | Waf-xc (Calculate zonal wave activity flux) | m2/s2 | |
| Waf-yc (Calculate meridional wave activity flux) | m2/s2 | ||
| Waf-zc (Calculate vertical wave activity flux) | Pa m/s2 | ||
| Wvf-x (Zonal water vapor flux) | kg/kg m/s | ||
| Wvf-y (Meridional water vapor flux) | kg/kg m/s | ||
| U'V' (Momentum flux by eddies) | m2/s2 | ||
| V'T' (Heat flux by eddies) | K m/s | ||
| Surface | SLP (Sea level pressure) | hPa | |
| Ps (Surface pressure) | hPa | ||
| qs (Surface specific humidity) | kg/kg | ||
| Ts (Surface temperature) | °C | ||
| T-Td (Surface 2m dew point depression) | K | ||
| Us (Surface zonal wind) | m/s | ||
| Vs (Surface meridional wind) | m/s | ||
| Wss (Surface horizontal wind speed) | m/s | ||
| Tprat (Surface total precipitation) | mm/day | ||
| SST (Sea surface temperature) | °C | ||
| Ice (Ice cover) | |||
| Latent heat flux (positive: upward) | W/m2 | ||
| Sensible heat flux (positive: upward) | W/m2 | ||
| Solar radiation flux (positive: upward) | W/m2 | ||
| Longwave radiation flux (positive: upward) | W/m2 | ||
| Net heat and radiation flux (positive: upward) | W/m2 | ||
| Isentropic Levels | Potential vorticity | PVU (10-6 K m2/kg/s) | |
| Zonal wind | m/s | ||
| Meridional wind | m/s | ||
| Vertical wind | Pa/s | ||
| SAT | Outgoing Longwave Radiation (OLR) | W/m2 | |
| SAT_CBO | CPC Blended OLR | W/m2 | |
| MGDSST | Sea Surface Data | Temperature (SST) | °C |
| COBE-SST2 | Sea Surface Data | Temperature (SST) | °C |
| Ice concentration | |||
| MOVE-G3 | d20-OHC | 20°C depth | m |
| OHC (vertical averaged temperature over top 300m) | °C | ||
| Thermohaline-3D | Potential temperature | °C | |
| Salinity | psu | ||
| Thermohaline-2D | Potential temperature at BBL | °C | |
| Salinity at BBL | psu | ||
| Sea surface height | m | ||
| Short wave radiation | W/m2 | ||
| Long wave radiation | W/m2 | ||
| Latent heat flux | W/m2 | ||
| Sensible heat flux | W/m2 | ||
| Heat flux w/o short wave radiation | W/m2 | ||
| Fresh water flux | kg/m2/s | ||
| Salt flux for restoring | psu m/s | ||
| Sea ice thickness | m | ||
| Snow depth | m | ||
| Ice concentration | |||
| Sea-ice surface temperature | °C | ||
| Current-3D | Eastward velocity | m/s | |
| Northward velocity | m/s | ||
| Current-2D | Eastward velocity at BBL | m/s | |
| Northward velocity at BBL | m/s | ||
| Eastward component of surface wind stress | N/m2 | ||
| Northward component of surface wind stress | N/m2 | ||
| Eastward velocity of ice | m/s | ||
| Northward velocity of ice | m/s | ||
| CLIMAT | T (Temperature) | °C | |
| Tx (Maximum Temperature) | °C | ||
| Tm (Minimum Temperature) | °C | ||
| Rain (Precipitation) | mm | ||
| INDEX | NINO.1+2 | SST averaged over the region EQ. - 10 S, 90 W - 80 W | K |
| NINO.3 | SST averaged over the region 5 N - 5 S, 150 W - 90 W | K | |
| NINO.3.4 | SST averaged over the region 5 N - 5 S, 170 W - 120 W | K | |
| NINO.4 | SST averaged over the region 5 N - 5 S, 160 E - 150 W | K | |
| NINO.WEST | SST averaged over the region 15 N - EQ., 130 E - 150 E | K | |
| IOBW | SST averaged over the region 20 N - 20 S, 40 E - 100 E | K | |
| WIN | SST averaged over the region 10N - 10 S, 50 E - 70 E | K | |
| EIN | SST averaged over the region Eq. - 10 S, 90 E - 110 E | K | |
| DMI | Difference between WIN and EIN | K | |
| CONST | Constant fields of JRA-3Q | Land masking (Land:1, Sea:0) | |
| Topographic height | m | ||
| Dataset | Element | Unit | |
|---|---|---|---|
| 1MONTH_ENS_MEAN | Pressure Levels | χ (Velocity potential) | 106 m2/s |
| ψ (Stream function) | 106 m2/s | ||
| T (Temperature) | °C | ||
| T-Td (Dew point depression) | °C | ||
| U (Zonal wind) | m/s | ||
| V (Meridional wind) | m/s | ||
| γ (Geopotential height) | m | ||
| Surface | SLP (Sea level pressure) | hPa | |
| Ts (Surface temperature) | °C | ||
| Rain (Daily Precipitation) | mm/day | ||
| 1MONTH_HIND | Pressure Levels | Velocity potential | 106 m2/s |
| Stream function | 106 m2/s | ||
| Geopotential height | m | ||
| Relative humidity | % | ||
| Temperature | °C | ||
| Dew point depression | °C | ||
| Zonal wind | m/s | ||
| Meridional wind | m/s | ||
| Surface | Surface temperature | °C | |
| Surface pressure | hPa | ||
| Rain | mm/day | ||